1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
docker41 [41]
3 years ago
11

Discuss the phase change condition due to reflection of light from a surface. Summarize equations of interference for thin film.

Physics
1 answer:
Dmitrij [34]3 years ago
5 0

Answer:

if this surface has a higher index than in the medium where the light travels, the reflected wave has a phase change of 180º

Explanation:

When a ray of light falls on a surface if this surface has a higher index than in the medium where the light travels, the reflected wave has a phase change of 180º this can be explained by Newton's third law, the light when arriving pushes the atoms of the medium that is more dense, and these atoms respond with a force of equal magnitude, but in the opposite direction.

When the fractional index is lower than that of the medium where the reflacted beam travels, notice a change in phase.

Also, when light penetrates the medium, it modifies its wavelength

              λ = λ₀ / n

We take these two aspects into account, the condition for contributory interference is

            d sin θ = (m + 1/2) λ

for destructive interference we have

            d sin θ = m λ

in general this phenomenon is observed at 90º

           2 d = (m +1/2) λ° / n

          2nd = (m + ½) λ₀

You might be interested in
If you adjust the brightness of a light until it matches the intensity of sourness of the taste of a lemon, you are engaging in
Butoxors [25]
Unrestricted Submarine Warfare
6 0
3 years ago
Which model shows how a comet's tail changes during its orbit?
pentagon [3]

Third model shows how a comet's tail changes during its orbit...

mark brainliest

5 0
2 years ago
Read 2 more answers
(I) A novice skier, starting from rest, slides down an icy frictionless 8.0° incline whose vertical height is 105 m. How fast is
Vlad1618 [11]

Answer:

v = 45.37 m/s

Explanation:

Given,

angle of inclination = 8.0°

Vertical height, H  = 105 m

Initial K.E. = 0 J

Initial P.E. = m g H

Final PE = 0 J

Final KE = \dfrac{1}{2}mv^2

Using Conservation of energy

KE_i + PE_i + KE_f + PE_f

0 + m g H = \dfrac{1}{2}mv^2 + 0

v = \sqrt{2gH}

v = \sqrt{2\times 9.8 \times 105}

v = 45.37 m/s

Hence, speed of the skier at the bottom is equal to v = 45.37 m/s

3 0
2 years ago
In the reaction 2H, + O, → H,0, what coeficient should be placed in front of H,0 to balance the reaction?
Vilka [71]
It’s water mate-
hOw rUdE
8 0
3 years ago
A speaker emits sound waves in all directions, and at a distance of 28 m from it the intensity level is 73 db. What is the total
Oduvanchick [21]

Answer:

P=0.197 Watt

Explanation:

Given That

B=73dB

Io= 1 * 10^-12

I=Io * 10^{\frac{B}{10} } \\I=2 * 10^{-5} Wm^{-2}  \\A=4 * pi * r^{2}\\ A=9852.03 m^{2}\\ Power= I * A\\P= 0.197 Watt

6 0
3 years ago
Other questions:
  • You build a 2.0-kg mound of mashed potatoes on a kitchen scale (which is a spring scale). You then use a large spoon to press on
    15·2 answers
  • Paragraph about cell wall
    15·2 answers
  • Find the height of a baseball with a mass of 0.15 kg that has a GPE of 73.5 J.<br><br> Help please?
    14·2 answers
  • You walk with a velocity of 2 m/s north. You see a man approaching you, and from your frame of reference he has a speed of 3 m/s
    11·1 answer
  • 3. A clown rides a small car at a speed of
    15·1 answer
  • A juggler throws a ball straight up into the air. The ball remains in the air for a time (t) before it lands back in the juggler
    6·1 answer
  • . The free throw line in basketball is 4.57 m (15 ft) from the basket, which is 3.05 m (10 ft) above the floor. A player standin
    14·1 answer
  • What is the most common kind of element in the solar wind?
    12·1 answer
  • The melting of a glacier is an example of the interactions among which of Earth’s spheres?
    15·1 answer
  • Question If a force of 2N is used to move a box 1 meter, how much work was done to move the box?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!